Belkin Mini Display Port to 2x HDMI Splitter Dongle Extends a Mini Display Port equipped desktop/laptop/MacBook to 2 HDMI display monitors. This product is not compatible with Microsoft Surface Pro 3, MacBook Air 10.8 or newer versions. The Splitter Dongle will only mirror both screen monitors if used with incompatible device Supports Video Resolutions up to 1920x1200 No Drivers needed, plug & play simplicity No external power adapter needed High Definition digital audio & video performance Works on monitors 22 inches or smaller